The special "fool proof" charging cord has two extra pins on the AC adapter end and two extra pins on the Yoga 3 Pro end. The extra pins only make a connection when the fool proof cord is plugged in to the Lenovo charger and the Yoga 3 Pro. When a regular USB cord is plugged into either the charger or the Yoga 3 Pro, it makes a regular USB connection.

Can I charge the Yoga 3 Pro with any USB charger?

No. The Yoga 3 Pro requires 2A at 20V, which is what the provided 40W Lenovo AC adapter supplies.

Can I charge a USB device with the Yoga 3 Pro AC adapter?

Absolutely. In addition to 2A at 20, the Yoga 3 Pro AC adapter supplies 2A at 5.2V (10.4W), enough to charge a phone or tablet. Works for iPad.

Where can I buy spare AC adapters and cords?

AC adapters with cords are sold in the accessories section of the Lenovo store.

Hi Thank you , definitely helpful since this detail is nowhere mentioned in manual or web page .... so if you for example ( as me ) loose charger ..... Now regarding extra charger I order mine 15 days ago ! today i received email that it would be shipped soonest in 15 days but accessory web page says - 4-5 weeks .... So any idea where else this thing could be sold ?

Old think pad are 65W and 90W , some were using 19V , I would rather recoment to check amazon for powerpacks ( extenal bateries ) with 20V output. I assume you have orginal Lenovo Yoga 3 pro cable , if yes ... lucky you because it is properietary connector and cant be bought. If not ( like me ) then you would have to open notebook and somehow connect directly.... New chargers / cables have now 4 weeks estimated delivery time ...

While the charger is great for its lightness, one thing that seriously annoys me is the short length of the cable. It is 1.85m from adapter to laptop, and on the adapter side it just plugs in directly to the wall. This makes it literally half the length of many other Lenovo chargers, which have another cable from the adapter to the outlet. What that means is that you need to be very close to an outlet to use it. In both my home and office desks, I need to use an extension cable from the outlet to the base of my desk.

Lenovo doesn't seem to sell any longer cables (or rather they don't even sell the original cable at least not on the web store). Anyone know if this unique cable is sold anywhere else in the world, and if there is a longer one?

Also note that you can't use a standard USB extension cable (i.e. male to female), since that has four pins only, and won't be recognized for charging the Yoga 3.